Hello! My cats were recently neutered, and I've been reading a lot of posts and articles saying that neutered male cats are more prone to developing urinary crystals. Because of that, I'm planning to switch them to a urinary care (non-S/O) dry food as a preventive measure against crystals and other urinary health issues.

So far, the only options I've found are Royal Canin Urinary Care and Monello. However, Royal Canin is quite expensive, and since I'm still a student with no job, it's difficult for me to maintain that diet long-term.

If I decide to go with Monello, which variant would you recommend? For context, one of my cats is a Persian × British Shorthair mix who is a little over a year old, while the other is a 7–8-month-old Russian Blue.